US20170122329A1 - Air conditioner - Google Patents
Air conditioner Download PDFInfo
- Publication number
- US20170122329A1 US20170122329A1 US15/338,153 US201615338153A US2017122329A1 US 20170122329 A1 US20170122329 A1 US 20170122329A1 US 201615338153 A US201615338153 A US 201615338153A US 2017122329 A1 US2017122329 A1 US 2017122329A1
- Authority
- US
- United States
- Prior art keywords
- blower
- air
- air conditioner
- blower fan
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/16—Centrifugal pumps for displacing without appreciable compression
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
- F24F1/0025—Cross-flow or tangential fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F6/00—Air-humidification, e.g. cooling by humidification
- F24F6/12—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air
- F24F6/16—Air-humidification, e.g. cooling by humidification by forming water dispersions in the air using rotating elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/121—Fluid guiding means, e.g. vanes related to the leading edge of a stator vane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/122—Fluid guiding means, e.g. vanes related to the trailing edge of a stator vane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2240/00—Components
- F05D2240/10—Stators
- F05D2240/12—Fluid guiding means, e.g. vanes
- F05D2240/124—Fluid guiding means, e.g. vanes related to the suction side of a stator vane
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Definitions
- the present invention disclosed herein relates to an air conditioner, and more particularly, to an air conditioner that upwardly guides air obliquely discharged from a blower.
- An air conditioner is an apparatus that changes the interior space into a pleasant environment by allowing air to flow and thus cooling, heating, purifying or humidifying air.
- This air conditioner admits air from a lower side and discharges air to an upper side, it is necessary that air smoothly flow from the lower side to the upper side inside the air conditioner.
- the present invention provides an air conditioner which upwardly guides air obliquely discharged from a blower.
- the present invention also provides an air conditioner which reduces noise and vibration while maximizing an air volume.
- Embodiments of the present invention provide air conditioners including: a blower fan blowing air; a blower motor rotating the blower fan; and a blower housing coupled with the blower motor and including a ring-shaped air blowing flow passage in which air discharged from the blower fan flows, wherein the blower housing includes a plurality of vanes that are disposed spaced from each other in a circumferential direction on the air blowing flow passage over the blower fan.
- each of the plurality of vanes may include a plurality of ribs formed on one surface thereof in an air flow direction.
- FIG. 1 is a perspective view illustrating an air conditioner according to an embodiment of the present invention
- FIG. 2 is a cross-sectional view illustrating the air conditioner shown in FIG. 1 ;
- FIG. 3 is a cross-sectional view illustrating a portion of an air conditioner according to an embodiment of the present invention.
- FIGS. 4 and 5 are perspective views illustrating a portion of the air conditioner shown in FIG. 3 ;
- FIG. 6 is an exploded perspective view illustrating a portion of the air conditioner shown in FIG. 3 ;
- FIG. 7 is a cross-sectional view illustrating a blower fan of an air conditioner according to an embodiment of the present invention.
- FIG. 8 is a bottom view illustrating the blower fan shown in FIG. 7 ;
- FIG. 9 is a plan view illustrating the blower fan shown in FIG. 7 ;
- FIG. 10 is a cross-sectional view illustrating a filter housing of an air conditioner according to an embodiment of the present invention.
- FIG. 11 is a plan view illustrating the filter housing shown in FIG. 10 ;
- FIG. 12 is a partial cross-sectional view illustrating an air conditioner according to an exemplary embodiment of the present invention.
- FIG. 13 is a perspective cross-sectional view illustrating a blower housing of an air conditioner according to an embodiment of the present invention.
- FIG. 14 is a plan view illustrating the blower housing shown in FIG. 13 ;
- FIG. 15 is a bottom view illustrating the blower housing shown in FIG. 13 ;
- FIG. 16 is a perspective view illustrating a vane of the blower housing shown in FIG. 13 ;
- FIG. 17 is a view illustrating an operation of the vane shown in FIG. 16 ;
- FIG. 18 is a front view illustrating a blower fan of an air conditioner according to another embodiment of the present invention.
- FIG. 1 is a perspective view illustrating an air conditioner according to an embodiment of the present invention.
- FIG. 2 is a cross-sectional view illustrating the air conditioner shown in FIG. 1 .
- An air conditioner may include a cleaning module 100 receiving external air and then cleaning air, and a humidification module 200 providing moisture to air cleaned in the cleaning module 100 .
- the cleaning module 100 may include a base body 110 that guides external air to the humidification module 200 , a filter assembly 10 that is disposed separably from the base body 110 and cleans air, and an air blowing unit 20 that is disposed inside the base body 110 to allow air to flow.
- the air blowing unit 20 may include a blower fan 24 allowing air to flow and a blower motor 22 rotating the blower fan 24 .
- the blower fan 24 may be disposed under the blower motor 22 . A detailed description of the blower fan 24 will be made later with reference to FIGS. 7 to 9 .
- upward and downward directions may mean a gravity direction
- a vertical direction and a longitudinal direction may mean a direction parallel to the gravity direction.
- the upward and downward directions, the vertical direction, and the longitudinal direction may mean a rotation axis direction of the blower motor 22 and the blower fan 24 .
- a horizontal direction and a lateral direction may mean a direction orthogonal to the gravity direction.
- the humidification module 200 may include a visual body 210 , a water tank 30 , a watering unit 40 , a humidification medium 50 , a humidification medium housing 220 , and a top cover assembly 230 .
- the visual body 210 may be separably stacked on the cleaning module 100 , and may be formed of a material through which a user can see the inside.
- the water tank 30 may be coupled to the visual body 210 , and may store water.
- the watering unit 40 may draw water of the water tank 30 , and may pump water upward to spray pumped water.
- the humidification medium 50 may be wetted with water sprayed from the watering unit 40 , and may humidify air passing therethrough.
- the humidification medium housing 220 may be equipped with the humidification medium 50 .
- the top cover assembly 230 may be separably coupled to the visual body 210 .
- the base body 110 may include a lower body 130 defining the exterior, a support body 120 defining the exterior, coupled to the upper side of the lower body 130 , and allowing the humidification module 200 to be separably placed thereon, a base 112 including an intake flow passage 101 for receiving external air and disposed on the bottom surface to support the base body 110 .
- the intake flow passage 101 may be formed in the base 112 to receive external air and guide received air to the filter assembly 10 .
- FIG. 3 is a cross-sectional view illustrating a portion of an air conditioner according to an embodiment of the present invention.
- FIGS. 4 and 5 are perspective views illustrating a portion of the air conditioner shown in FIG. 3 .
- FIG. 6 is an exploded perspective view illustrating a portion of the air conditioner shown in FIG. 3 .
- the air conditioner may include a blower housing 150 and a filter housing 140 .
- the blower housing 150 may be coupled with the blower motor 22 , and may include a ring-shaped air blowing flow passage 158 in which air discharged from the blower fan 24 flows.
- the filter housing 140 may be coupled to the blower housing 150 , and may receive a lower portion of the blower fan 24 .
- the filter housing 140 may be disposed inside the lower body 130 .
- the filter housing 140 may be coupled to the upper side of the base 112 .
- the filter housing 140 may be coupled to the lower side of the blower housing 150 .
- the filter housing 140 may be equipped with the filter assembly 10 , and may guide air passing the filter assembly 10 to the blower fan 24 .
- the filter housing 140 may include a filter mounting part 148 disposed at a lower portion thereof and detachably mounted with the filter assembly 10 , and a flow guide 146 disposed at an upper portion thereof and receiving a lower portion of the blower fan 24 of the air blowing unit 20 .
- the filter housing 140 may include a circular inlet 142 which is formed between the filter mounting part 148 and the flow guide 146 and through which air purified through the filter assembly 10 flows into the blower fan 24 .
- the filter housing 140 may include a radial grille formed on the inlet 142 .
- the blower housing 150 may be disposed inside the lower body 130 .
- the blower housing 150 may be coupled to the upper side of the filter housing 140 .
- the blower housing 150 may be coupled to the lower side of the support body 120 .
- the blower housing 150 may support the blower motor 22 , and may guide air, discharged from the blower fan 24 , to the support body 120 .
- the blower housing 150 may include a blower body 152 forming the exterior and having a cylindrical shape, and a motor cover 154 disposed at a central portion of the blower body 152 and having a bowl shape to receive the blower motor 22 .
- the blower housing may include a ring-shaped air blowing flow passage 158 which is formed between the blower body 152 and the motor cover 154 and in which air discharged from the blower fan 24 flows.
- the blower housing 150 may include a plurality of vanes 156 disposed spaced from each other in a circumferential direction on the air blowing flow passage 158 .
- blower housing 150 A detailed description of the blower housing 150 will be made later with reference to FIGS. 13 to 17 .
- the air blowing unit 20 may include a motor coupling part 26 disposed over the blower motor 22 and coupled to the motor cover 154 to couple the blower motor 22 to the motor cover 154 .
- the blower motor 22 may generate a torque to rotate the blower fan 24 .
- the blower motor 22 may be disposed inside the motor cover 154 of the blower housing 150 .
- the blower motor 22 may be coupled to the motor cover 154 of the blower housing 150 by the motor coupling part 26 .
- the blower motor 22 may include a shaft 22 a rotated by a torque.
- the shaft 22 a of the blower motor 22 may penetrate a lower center of the motor cover 154 to be coupled to the blower fan 24 .
- the blower fan 24 may be rotated by the blower motor 22 to blow air.
- the blower fan 24 may blow air introduced through the inlet 142 of the filter housing 140 to discharge air to the air blowing flow passage 158 .
- the blower fan 24 may rotate clockwise when viewed from top.
- the blower fan 24 may be a centrifugal fan that admits air in a rotation axis direction and discharges air in radial direction.
- the air volume may be maximized at the same rotation speed and size as other kinds of fans, and air can be discharged through the ring-shaped air blowing flow passage 158 .
- the blower fan 24 may be a modified centrifugal fan in which air is obliquely discharged in an upward direction.
- the blower fan 24 may be disposed under the blower motor 22 .
- An upper portion of the blower fan 24 may be disposed outside the motor cover 154 of the blower housing 150 . That is, a lower portion of the motor cover 154 may be inserted into an upper portion of the blower fan 24 .
- a lower portion of the blower fan 24 may be inserted into the flow guide 146 of the filter housing 140 .
- a lower end of the blower fan 24 may be disposed adjacent to the inlet 142 of the filter housing 140 .
- the shaft 22 a of the blower motor 22 may be coupled to the center of the blower fan 24 .
- FIG. 7 is a cross-sectional view illustrating a blower fan of an air conditioner according to an embodiment of the present invention.
- FIG. 8 is a bottom view illustrating the blower fan shown in FIG. 7 .
- FIG. 9 is a plan view illustrating the blower fan shown in FIG. 7 .
- the blower fan 24 may include a hub 24 a having a center thereof coupled with the shaft 22 a of the blower motor 22 , a shroud 24 c spaced from the hub 24 a and including an inlet hole 24 c - 1 formed at a central portion thereof to receive air, and a plurality of blades 24 b disposed between the hub 24 a and the shroud 24 c.
- the blade 24 b may be provided in plurality between the hub 24 a and the shroud 24 c .
- the upper end of the blade 24 b may be coupled to the bottom surface of the hub 24 a
- the lower end of the blade 24 b may be coupled to the top surface of the shroud 24 c .
- the plurality of blades 24 b may be disposed spaced in a circumferential direction.
- the section of the blade 24 b may be a form of airfoil.
- the side end of the blade 24 b which air flows into may be referred to as a leading edge 24 b - 1
- the side end of the blade 24 b which air flows out of may be referred to as a trailing edge 24 b - 2 .
- the blade 24 b may be obliquely formed with respect to a vertical direction such that discharged air obliquely directs to an upper side in a radial direction.
- the trailing edge 24 b - 2 of the blade 24 b may be obliquely formed in a right direction at an upper side when viewed from a side of the blower fan 24 in a rotation axis direction.
- the leading edge 24 b - 1 of the blade 24 b may be shorter than the trailing edge 24 - 2 such that discharged air obliquely directs to an upper side in a radial direction.
- the hub 24 a may have a cone shape that increasingly protrudes downward to the center thereof.
- a lower portion of the motor cover 154 may be inserted into an upper portion of the hub 24 a , and thus at least a portion of the blower motor 22 may be disposed inside the hub 24 a . Due to this structure, the height that blower motor 22 and the blower fan 24 occupy can be minimized, and thus the whole height of the air conditioner can be minimized.
- the shaft 22 a of the blower motor 22 that is disposed over the hub 24 a may be coupled to the center of the hub 24 a .
- the hub 24 a may be disposed over the shroud 24 c , and may be spaced from the shroud 24 c .
- the plurality of blades 24 b may be coupled to the undersurface of the hub 24 a.
- the hub 24 a may have an outer circumferential end thereof formed to incline in a direction opposite to the direction of the inlet hole 24 c - 1 .
- the outer circumferential end of the hub 24 a may mean the circumference of the upper end of the hub 24 a .
- the direction to which the outer circumferential end of the hub 24 a directs may form about 45 degrees with a horizontal direction.
- the outer circumferential end of the hub 24 a may be obliquely formed in an upward direction such that air is obliquely discharged upward.
- the longitudinal section of the hub 24 a may be formed into a form of straight line A which is oblique from the central portion to the outer circumferential end of the hub 24 a in a direction opposite to the direction of the inlet hole 24 c - 1 .
- the longitudinal section of the hub 24 a may be formed into a straight line A which is oblique from a portion of the hub 24 a , connected to each leading edge 24 b - 1 of the plurality of blades 24 b , to the outer circumferential end of the hub 24 a .
- the hub 24 a may have a diameter which uniformly increases from the center portion to the outer circumferential end thereof.
- the hub 24 a may be formed to have a diameter that uniformly increases from a portion of the hub 24 a , connected to each leading edge 24 b - 1 of the plurality of blades 24 b , to the outer circumferential end of the hub 24 a.
- the shroud 24 c may have a bowl shape, and may have the circular inlet hole 24 c - 1 formed at the central portion thereof to receive air.
- the inlet hole 24 c - 1 of the shroud 24 c may be disposed to correspond to the inlet 142 of the filter housing 140 . That is, the inlet 142 of the filter housing 140 may be formed at a portion corresponding to the inlet hole 24 c - 1 of the shroud 24 c .
- the diameter of the inlet hole 24 c - 1 may be larger than the diameter of the inlet 142 of the filter housing 140 .
- the shroud 24 c may include an intake guide 24 c - 2 that is formed at the circumferential portion of the inlet hole 24 c - 1 and vertically protrudes downward.
- the shroud 24 c may be disposed under the hub 24 a , and may be spaced from the hub 24 a .
- the plurality of blades 24 b may be coupled to the top surface of the shroud 24 c.
- the shroud 24 c may have an outer circumferential end thereof formed to incline in a direction opposite to the direction of the inlet hole 24 c - 1 .
- the outer circumferential end of the shroud 24 c may mean the circumference of the upper end of the shroud 24 c .
- the direction to which the outer circumferential end of the shroud 24 c directs may form about 45 degrees with a horizontal direction.
- the outer circumferential end of the shroud 24 c may be obliquely formed in an upward direction such that air is obliquely discharged upward.
- the direction to which the outer circumferential end of the shroud 24 c directs may be substantially parallel to the direction to which the outer circumferential end of the hub 24 a directs.
- the longitudinal section of the shroud 24 c may be formed into a form of straight line C which is oblique from the upper end of the intake guide 24 c - 2 to the outer circumferential end of the shroud 24 c in a direction opposite to the direction of the inlet hole 24 c - 1 .
- the longitudinal section of the shroud 24 c may be formed into a straight line C which is oblique from a portion of the shroud 24 c , connected to each leading edge 24 b - 1 of the plurality of blades 24 b , to the outer circumferential end of the shroud 24 c .
- the shroud 24 c may have a diameter which uniformly increases from the upper end of the intake guide 24 c - 2 to the outer circumferential end thereof.
- the shroud 24 c may be formed to have a diameter that uniformly increases from a portion of the shroud 24 c , connected to each leading edge 24 b - 1 of the plurality of blades 24 b , to the outer circumferential end of the shroud 24 c.
- the oblique straight line C of the longitudinal section of the shroud 24 c and the oblique straight line A of the longitudinal section of the hub 24 a may be substantially parallel to each other. According to embodiment, an interval between the shroud 24 c and the hub 24 a may gradually increases to the outer circumferential end thereof.
- the diameter of the outer circumferential end of the shroud 24 c may be larger than the diameter of the outer circumferential end of the hub 24 a .
- the outer circumferential end of the shroud 24 c may further protrude in a radial direction than the outer circumferential end of the hub 24 a .
- the outer circumferential end of the hub 24 a may further protrude in a radial direction than a point P where a line S forming the shortest distance from the outer circumferential end of the shroud 24 c to the hub 24 a meets the hub 24 a.
- FIG. 10 is a cross-sectional view illustrating a filter housing of an air conditioner according to an embodiment of the present invention.
- FIG. 11 is a plan view illustrating the filter housing shown in FIG. 10 .
- FIG. 12 is a partial cross-sectional view illustrating an air conditioner according to an exemplary embodiment of the present invention.
- the filter mounting part 148 may form a lower portion of the filter housing 140 , and may receive the filter assembly 10 .
- the base 112 may be coupled to a lower side of the filter mounting part 148 .
- a circular inlet 142 into which air flows may be formed in the upper surface of the filter mounting part 148 .
- the filter housing 140 may include an inflow guide 144 having a rim shape and upwardly protruding from a circumferential portion of the inlet hole 24 c - 1 .
- the inflow guide 144 may protrude to the inside of the intake guide 24 c - 2 of the shroud 24 c .
- the diameter of the inflow guide 144 may be formed to be smaller than the diameter of the intake guide 24 c - 2 such that the upper end of the inflow guide 144 is inserted into the intake guide 24 c - 2 .
- the inflow guide 144 may be disposed concentrically with the intake guide 24 c - 2 .
- the flow guide 146 may form an upper portion of the filter housing 140 , and may accommodate a lower portion of the blower fan 24 .
- the flow guide 146 may include a least a portion of an inner surface thereof corresponding to the shroud 24 c , which is obliquely formed.
- the flow guide 146 may prevent air discharged out of the blower fan 24 from flowing into a lower side of the shroud 24 c .
- the flow guide 146 may have a gradually increasing inner diameter toward an outer circumferential end thereof.
- the outer circumferential end of the flow guide 146 may mean the circumference of the upper end of the flow guide 146 .
- the distance between the inner surface of the flow guide 146 and the shroud 24 c may gradually become closer toward the outer circumferential end thereof.
- the outer circumferential end of the flow guide 146 may be formed higher than the outer circumferential end of the shroud 24 c . However, the outer circumferential end of the flow guide 146 may be formed lower than the line C straightly extending from the outer circumferential end of the shroud 24 c .
- the flow guide 146 may be formed such that the line C straightly extending from the outer circumferential end of the shroud 24 c does not meet the flow guide 146 . That is, the flow guide 146 may be formed such that air guide by the shroud 24 c does not directly meet the flow guide 146 .
- the line C straightly extending from the outer circumferential end of the shroud 24 c may direct to the air blowing flow passage 158 , and may meet the inner surface of the blower body 152 of the blower housing 150 .
- the blower housing 150 may be formed such that the line A straightly extending from the outer circumferential end of the hub 24 a may direct to the air blowing flow passage 158 and meets the vane 156 .
- the motor cover 154 of the blower housing 150 may be formed so as not to meet the line A straightly extending from the outer circumferential end of the hub 24 a .
- At least a portion of the outer surface of the motor cover 154 of the blower housing 150 may be formed obliquely along the hub 24 a .
- At least a portion of the outer surface of the motor cover 154 may be formed closely to the hub 24 a to prevent air discharged out of the blower fan 24 from flowing into an upper central portion of the hub 24 a.
- FIG. 13 is a perspective cross-sectional view illustrating a blower housing of an air conditioner according to an embodiment of the present invention.
- FIG. 14 is a plan view illustrating the blower housing shown in FIG. 13 .
- FIG. 15 is a bottom view illustrating the blower housing shown in FIG. 13 .
- FIG. 16 is a perspective view illustrating a vane of the blower housing shown in FIG. 13 .
- FIG. 17 is a view illustrating an operation of the vane shown in FIG. 16 .
- the blower body 152 may have a cylindrical shape, and a plurality of vanes 156 may be coupled to an inner circumferential surface of the blower body 152 .
- the blower body 152 may form the ring-shape air blowing flow passage 158 together with the motor cover 154 .
- the flow guide 146 may be coupled to the lower side of the blower body 152 .
- the circumference of the lower end of the blower body 152 may be larger than the outer circumferential end of the flow guide 146 such that the lower end of the blower body 152 covers and is coupled to the upper end of the flow guide 146 .
- the support body 120 may be coupled to an upper side of the blower body 152 .
- the motor cover 154 may have a bowl shape, and the blower motor 22 may be inserted into and coupled to the motor cover 154 .
- the plurality of vanes 156 may be coupled to the outer circumferential surface of the motor cover 154 .
- the blower motor 22 may be disposed inside the motor cover 154 , and an upper portion of the blower fan 24 may be disposed outside the motor cover 154 .
- the motor cover 154 may be disposed at a central portion of the blower body 152 while being spaced from the motor cover 154 , and may form the ring-shaped air blowing flow passage 158 together with the blower body 152 .
- the plurality of vanes 156 may be disposed on the air blowing flow passage 158 while being spaced.
- the plurality of vanes 156 may connect the motor cover 154 and the blower body 152 , and may support the motor cover 154 and the blower body 152 such that the motor cover 154 is spaced from the blower body 152 .
- the plurality of vanes 156 may upwardly guide air discharged from the blower fan 24 to the air blowing flow passage 158 .
- Each of the plurality of vanes 156 may be formed into a bent plate shape which is uprightly disposed almost in a vertical direction.
- Each of the plurality of vanes 156 may include a plurality of ribs 156 e formed on one surface thereof in an air flow direction.
- the surface of the vane 156 to which air flows may be referred to as a positive pressure surface 156 c , and the opposite surface to the positive pressure surface 156 c may be referred to as a negative pressure surface 156 d .
- the surface on which the plurality of ribs 156 e are not formed may be a positive pressure surface
- the surface on which the plurality of ribs 156 e are formed may be a negative pressure surface.
- the lower end that is an upstream side of the air flow direction may be referred to as a front end 156 a
- the upper end that is a downstream side of the air flow direction may be referred to as a rear end 156 b.
- Air discharged from the blower fan 24 may be obliquely discharged upward to the air blowing flow passage 158 in a circumferential direction, and may rotate in a rotation direction of the blower fan 24 when entering the air blowing flow passage 158 .
- air discharged from the blower fan 24 may rotate clockwise when viewed from top, and may flow upward.
- the positive pressure surface 156 c may be concavely formed, and the negative pressure surface 156 d may be convexly formed.
- the rear end 156 b that is a surface coupled to the blower body 152 may be formed to direct to the upper side, and toward the front end 165 , the vane 156 may be bent in a direction (direction of the positive pressure surface 156 c on which the ribs are not formed) from which air flows.
- each of the plurality of vanes 156 the front end 156 may direct to the rotation direction of the blower fan 24 in a radial direction, and the rear end 156 b may direct to the rotation direction of the blower fan 24 in a radial direction.
- Each of the plurality of vanes 156 may guide air spirally swirling due to the above-mentioned shape, so as to allow air to flow in a vertical direction.
- the plurality of ribs 156 e may protrude from the negative pressure surface 156 d of the vane 156 , and the longitudinal direction of the rib 156 e may be formed to become the air flow direction.
- Each of the plurality of ribs 156 e may be formed in a form of airfoil in which the height of the section thereof gradually decreases from the front end to the rear end.
- Each of the plurality of ribs 156 e may be convexly formed in a bent direction of the negative pressure surface 156 d of the vane 156 .
- the plurality of ribs 156 e may be formed on the negative pressure surface 156 d of the vane 156 to prevent a swirl from occurring on the negative pressure surface 156 d of the vane 156 and allow air to flow in an upward direction.
- Each of the plurality of vanes 156 may be formed such that the front end 156 a is curvedly bent from the positive pressure surface 156 c to the negative pressure surface 156 d .
- the front end 156 a of each of the plurality of vanes 156 may be curvedly bent in a height direction of the plurality of ribs 156 e , and thus may allow air introduced in a direction of the positive pressure surface 156 to flow upward along the positive pressure surface 156 c .
- the front ends 156 a of the plurality of vanes 156 may guide air, flowing to the negative pressure surface 156 d , toward the plurality of vanes 156 .
- the rear end 156 b may have a saw-toothed shape.
- the rear end 156 b of the vane 156 may be formed into a saw-toothed shape, and thus a time difference may occur on air coming away from the rear end 156 b , thereby inhibiting occurrence of noise.
- the blower fan 24 connected to the shaft 22 a of the blower motor 22 may rotate.
- the blower fan 24 rotates and thus air blows, external air may flow into the intake flow passage 101 of the base 112 .
- Air introduced through the intake flow passage 101 may be purified while passing the filter assembly 10 , and then may be entered into the inlet hole 24 c - 1 of the shroud 24 c of the blower fan 24 through the inlet 142 of the filter housing 140 .
- Air entered to the blower fan 24 may be obliquely discharged in an upward direction by the shroud 24 c and the hub 24 a .
- Air discharged out of the blower fan 24 may pass the air blowing flow passage 158 of the air blowing unit 20 , and may flow in an upward direction by the plurality of vanes 156 . Air passing through the air blowing flow passage 158 may be guided to the humidification module 200 placed on the support body 120 . Air flowing into the humidification module 200 may be humidified while passing through the humidification medium 50 , and then may be upwardly discharged through the top cover assembly 230 .
- FIG. 18 is a front view illustrating a blower fan of an air conditioner according to another embodiment of the present invention.
- a blower fan 24 ′ may include a hub 24 ′ a having a center thereof coupled with the shaft, a shroud 24 ′ c spaced from the hub 24 ′ a and including an inlet hole formed at a central portion thereof to receive air, and a plurality of blades 24 b disposed between the hub 24 ′ a and the shroud 24 ′ c.
- a trailing edge 24 ′ b - 2 of the blade 24 ′ b may include at least one curve.
- a portion of each trailing edge 24 ′ b - 2 of the plurality of blades 24 ′ b may further protrude in a radial direction than a virtual line L connecting between a point connected to the shroud 24 ′ c and a point connected to the hub 24 ′ a .
- the radially protruding portion of the trailing edge 24 ′ b - 2 may be formed into a curve.
- a portion of the trailing edge 24 ′ b - 2 close to the point connected to the shroud 24 ′ c may be formed into a curve, and a portion of the trailing edge 24 ′ b - 2 close to the point connected to the hub 24 ′ a may be formed into a straight-line.
- the portion of the trailing edge 24 ′ b - 2 close to the point connected to the shroud 24 ′ c may be formed in a curve, and may be convexly formed so as to protrude in a radial direction. Thus, occurrence of a whirl due to a flow interference of the shroud 24 ′ c and the trailing edge 24 ′ b - 2 can be inhibited.
- the portion 24 ′ a - 2 a of the trailing edge 24 ′ b - 2 formed into a curve may be greater than the portion 24 ′ a - 2 b formed into a straight-line.
- the portion 24 ′ a - 2 a formed into a curve is greater, occurrence of a swirl may be further inhibited.
- the portion 24 ′ a - 2 a formed into a curve ranges from about 75% to about 85% of the trailing edge 24 ′ b - 2 .
- blower fans, the flow guides, and the vanes according to embodiments may be applied to various air conditioners that perform purification, humidification, cooling, and heating by blowing air.
- An air conditioner according to an exemplary embodiment of the present invention has at least one of the following effects.
- a plurality of vanes disposed at a blower fan slipstream can guide air discharged from a blower fan in a spiral form in a vertical direction, and thus can maximize the air volume while reducing a flow loss, noise and vibration.
- occurrence of swirl can be inhibited by forming a rib on the negative pressure surface of the vane, and air is guided so as to flow upward.
- the flow loss and occurrence of noise and vibration can be inhibited.
- air purified at a lower side can be allowed to flow upward and then humidified, and thus cleaning and humidification of air can be smoothly performed.
Abstract
Description
- This application claims the benefit of U.S. Provisional Patent Application No. 62/248,463, filed on Oct. 30, 2015, Korean Patent Application No. 10-2015-0156254 filed on Nov. 7, 2015, and Korean Patent Application No. 10-2015-0186044 filed on Dec. 24, 2015 which are incorporated herein by reference for all purposes as if fully set forth herein.
- The present invention disclosed herein relates to an air conditioner, and more particularly, to an air conditioner that upwardly guides air obliquely discharged from a blower.
- An air conditioner is an apparatus that changes the interior space into a pleasant environment by allowing air to flow and thus cooling, heating, purifying or humidifying air. When this air conditioner admits air from a lower side and discharges air to an upper side, it is necessary that air smoothly flow from the lower side to the upper side inside the air conditioner.
- The present invention provides an air conditioner which upwardly guides air obliquely discharged from a blower.
- The present invention also provides an air conditioner which reduces noise and vibration while maximizing an air volume.
- The objectives of the present invention are not limited to the above-mentioned objectives, and other objectives that are not mentioned will be clearly understood by persons skilled in the art from the following description.
- Embodiments of the present invention provide air conditioners including: a blower fan blowing air; a blower motor rotating the blower fan; and a blower housing coupled with the blower motor and including a ring-shaped air blowing flow passage in which air discharged from the blower fan flows, wherein the blower housing includes a plurality of vanes that are disposed spaced from each other in a circumferential direction on the air blowing flow passage over the blower fan.
- In some embodiments, each of the plurality of vanes may include a plurality of ribs formed on one surface thereof in an air flow direction.
- The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
- The accompanying drawings are included to provide a further understanding of the present invention, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain principles of the present invention. In the drawings:
-
FIG. 1 is a perspective view illustrating an air conditioner according to an embodiment of the present invention; -
FIG. 2 is a cross-sectional view illustrating the air conditioner shown inFIG. 1 ; -
FIG. 3 is a cross-sectional view illustrating a portion of an air conditioner according to an embodiment of the present invention; -
FIGS. 4 and 5 are perspective views illustrating a portion of the air conditioner shown inFIG. 3 ; -
FIG. 6 is an exploded perspective view illustrating a portion of the air conditioner shown inFIG. 3 ; -
FIG. 7 is a cross-sectional view illustrating a blower fan of an air conditioner according to an embodiment of the present invention; -
FIG. 8 is a bottom view illustrating the blower fan shown inFIG. 7 ; -
FIG. 9 is a plan view illustrating the blower fan shown inFIG. 7 ; -
FIG. 10 is a cross-sectional view illustrating a filter housing of an air conditioner according to an embodiment of the present invention; -
FIG. 11 is a plan view illustrating the filter housing shown inFIG. 10 ; -
FIG. 12 is a partial cross-sectional view illustrating an air conditioner according to an exemplary embodiment of the present invention; -
FIG. 13 is a perspective cross-sectional view illustrating a blower housing of an air conditioner according to an embodiment of the present invention; -
FIG. 14 is a plan view illustrating the blower housing shown inFIG. 13 ; -
FIG. 15 is a bottom view illustrating the blower housing shown inFIG. 13 ; -
FIG. 16 is a perspective view illustrating a vane of the blower housing shown inFIG. 13 ; -
FIG. 17 is a view illustrating an operation of the vane shown inFIG. 16 ; and -
FIG. 18 is a front view illustrating a blower fan of an air conditioner according to another embodiment of the present invention. - Advantages and features of the present invention, and implementation methods thereof will be clarified through following embodiments described with reference to the accompanying drawings. The present invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. Further, the present invention is only defined by scopes of claims. Like reference numerals refer to like elements throughout.
- Hereinafter, air conditioners according to exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
-
FIG. 1 is a perspective view illustrating an air conditioner according to an embodiment of the present invention.FIG. 2 is a cross-sectional view illustrating the air conditioner shown inFIG. 1 . - An air conditioner according to an embodiment of the present invention may include a
cleaning module 100 receiving external air and then cleaning air, and ahumidification module 200 providing moisture to air cleaned in thecleaning module 100. - The
cleaning module 100 may include abase body 110 that guides external air to thehumidification module 200, afilter assembly 10 that is disposed separably from thebase body 110 and cleans air, and an air blowingunit 20 that is disposed inside thebase body 110 to allow air to flow. - The air blowing
unit 20 may include ablower fan 24 allowing air to flow and ablower motor 22 rotating theblower fan 24. In this embodiment, theblower fan 24 may be disposed under theblower motor 22. A detailed description of theblower fan 24 will be made later with reference toFIGS. 7 to 9 . - In this embodiment, upward and downward directions may mean a gravity direction, and a vertical direction and a longitudinal direction may mean a direction parallel to the gravity direction. Also, the upward and downward directions, the vertical direction, and the longitudinal direction may mean a rotation axis direction of the
blower motor 22 and theblower fan 24. A horizontal direction and a lateral direction may mean a direction orthogonal to the gravity direction. - The
humidification module 200 may include avisual body 210, awater tank 30, awatering unit 40, ahumidification medium 50, a humidificationmedium housing 220, and atop cover assembly 230. Thevisual body 210 may be separably stacked on thecleaning module 100, and may be formed of a material through which a user can see the inside. Thewater tank 30 may be coupled to thevisual body 210, and may store water. Thewatering unit 40 may draw water of thewater tank 30, and may pump water upward to spray pumped water. Thehumidification medium 50 may be wetted with water sprayed from thewatering unit 40, and may humidify air passing therethrough. The humidificationmedium housing 220 may be equipped with thehumidification medium 50. Thetop cover assembly 230 may be separably coupled to thevisual body 210. - The
base body 110 may include alower body 130 defining the exterior, asupport body 120 defining the exterior, coupled to the upper side of thelower body 130, and allowing thehumidification module 200 to be separably placed thereon, abase 112 including anintake flow passage 101 for receiving external air and disposed on the bottom surface to support thebase body 110. Theintake flow passage 101 may be formed in thebase 112 to receive external air and guide received air to thefilter assembly 10. -
FIG. 3 is a cross-sectional view illustrating a portion of an air conditioner according to an embodiment of the present invention.FIGS. 4 and 5 are perspective views illustrating a portion of the air conditioner shown inFIG. 3 .FIG. 6 is an exploded perspective view illustrating a portion of the air conditioner shown inFIG. 3 . - The air conditioner according to an embodiment of the present invention may include a
blower housing 150 and afilter housing 140. Theblower housing 150 may be coupled with theblower motor 22, and may include a ring-shaped air blowingflow passage 158 in which air discharged from theblower fan 24 flows. Thefilter housing 140 may be coupled to theblower housing 150, and may receive a lower portion of theblower fan 24. - The
filter housing 140 may be disposed inside thelower body 130. Thefilter housing 140 may be coupled to the upper side of thebase 112. Thefilter housing 140 may be coupled to the lower side of theblower housing 150. Thefilter housing 140 may be equipped with thefilter assembly 10, and may guide air passing thefilter assembly 10 to theblower fan 24. - The
filter housing 140 may include afilter mounting part 148 disposed at a lower portion thereof and detachably mounted with thefilter assembly 10, and aflow guide 146 disposed at an upper portion thereof and receiving a lower portion of theblower fan 24 of theair blowing unit 20. Thefilter housing 140 may include acircular inlet 142 which is formed between thefilter mounting part 148 and theflow guide 146 and through which air purified through thefilter assembly 10 flows into theblower fan 24. Thefilter housing 140 may include a radial grille formed on theinlet 142. - A detailed description of the
filter housing 140 will be made later with reference toFIGS. 10 to 12 . - The
blower housing 150 may be disposed inside thelower body 130. Theblower housing 150 may be coupled to the upper side of thefilter housing 140. Theblower housing 150 may be coupled to the lower side of thesupport body 120. Theblower housing 150 may support theblower motor 22, and may guide air, discharged from theblower fan 24, to thesupport body 120. - The
blower housing 150 may include ablower body 152 forming the exterior and having a cylindrical shape, and amotor cover 154 disposed at a central portion of theblower body 152 and having a bowl shape to receive theblower motor 22. The blower housing may include a ring-shaped airblowing flow passage 158 which is formed between theblower body 152 and themotor cover 154 and in which air discharged from theblower fan 24 flows. Theblower housing 150 may include a plurality ofvanes 156 disposed spaced from each other in a circumferential direction on the airblowing flow passage 158. - A detailed description of the
blower housing 150 will be made later with reference toFIGS. 13 to 17 . - The
air blowing unit 20 may include amotor coupling part 26 disposed over theblower motor 22 and coupled to themotor cover 154 to couple theblower motor 22 to themotor cover 154. - The
blower motor 22 may generate a torque to rotate theblower fan 24. Theblower motor 22 may be disposed inside themotor cover 154 of theblower housing 150. Theblower motor 22 may be coupled to themotor cover 154 of theblower housing 150 by themotor coupling part 26. Theblower motor 22 may include ashaft 22 a rotated by a torque. Theshaft 22 a of theblower motor 22 may penetrate a lower center of themotor cover 154 to be coupled to theblower fan 24. - The
blower fan 24 may be rotated by theblower motor 22 to blow air. Theblower fan 24 may blow air introduced through theinlet 142 of thefilter housing 140 to discharge air to the airblowing flow passage 158. In this embodiment, theblower fan 24 may rotate clockwise when viewed from top. - In this embodiment, the
blower fan 24 may be a centrifugal fan that admits air in a rotation axis direction and discharges air in radial direction. In a centrifugal fan, the air volume may be maximized at the same rotation speed and size as other kinds of fans, and air can be discharged through the ring-shaped airblowing flow passage 158. In this embodiment, theblower fan 24 may be a modified centrifugal fan in which air is obliquely discharged in an upward direction. - The
blower fan 24 may be disposed under theblower motor 22. An upper portion of theblower fan 24 may be disposed outside themotor cover 154 of theblower housing 150. That is, a lower portion of themotor cover 154 may be inserted into an upper portion of theblower fan 24. A lower portion of theblower fan 24 may be inserted into theflow guide 146 of thefilter housing 140. A lower end of theblower fan 24 may be disposed adjacent to theinlet 142 of thefilter housing 140. Theshaft 22 a of theblower motor 22 may be coupled to the center of theblower fan 24. -
FIG. 7 is a cross-sectional view illustrating a blower fan of an air conditioner according to an embodiment of the present invention.FIG. 8 is a bottom view illustrating the blower fan shown inFIG. 7 .FIG. 9 is a plan view illustrating the blower fan shown inFIG. 7 . - The
blower fan 24 may include ahub 24 a having a center thereof coupled with theshaft 22 a of theblower motor 22, ashroud 24 c spaced from thehub 24 a and including aninlet hole 24 c-1 formed at a central portion thereof to receive air, and a plurality ofblades 24 b disposed between thehub 24 a and theshroud 24 c. - The
blade 24 b may be provided in plurality between thehub 24 a and theshroud 24 c. The upper end of theblade 24 b may be coupled to the bottom surface of thehub 24 a, and the lower end of theblade 24 b may be coupled to the top surface of theshroud 24 c. The plurality ofblades 24 b may be disposed spaced in a circumferential direction. The section of theblade 24 b may be a form of airfoil. - The side end of the
blade 24 b which air flows into may be referred to as a leadingedge 24 b-1, and the side end of theblade 24 b which air flows out of may be referred to as a trailingedge 24 b-2. - The
blade 24 b may be obliquely formed with respect to a vertical direction such that discharged air obliquely directs to an upper side in a radial direction. In this embodiment, the trailingedge 24 b-2 of theblade 24 b may be obliquely formed in a right direction at an upper side when viewed from a side of theblower fan 24 in a rotation axis direction. The leadingedge 24 b-1 of theblade 24 b may be shorter than the trailing edge 24-2 such that discharged air obliquely directs to an upper side in a radial direction. - The
hub 24 a may have a cone shape that increasingly protrudes downward to the center thereof. A lower portion of themotor cover 154 may be inserted into an upper portion of thehub 24 a, and thus at least a portion of theblower motor 22 may be disposed inside thehub 24 a. Due to this structure, the height thatblower motor 22 and theblower fan 24 occupy can be minimized, and thus the whole height of the air conditioner can be minimized. - The
shaft 22 a of theblower motor 22 that is disposed over thehub 24 a may be coupled to the center of thehub 24 a. Thehub 24 a may be disposed over theshroud 24 c, and may be spaced from theshroud 24 c. The plurality ofblades 24 b may be coupled to the undersurface of thehub 24 a. - The
hub 24 a may have an outer circumferential end thereof formed to incline in a direction opposite to the direction of theinlet hole 24 c-1. The outer circumferential end of thehub 24 a may mean the circumference of the upper end of thehub 24 a. The direction to which the outer circumferential end of thehub 24 a directs may form about 45 degrees with a horizontal direction. The outer circumferential end of thehub 24 a may be obliquely formed in an upward direction such that air is obliquely discharged upward. - The longitudinal section of the
hub 24 a may be formed into a form of straight line A which is oblique from the central portion to the outer circumferential end of thehub 24 a in a direction opposite to the direction of theinlet hole 24 c-1. - The longitudinal section of the
hub 24 a may be formed into a straight line A which is oblique from a portion of thehub 24 a, connected to eachleading edge 24 b-1 of the plurality ofblades 24 b, to the outer circumferential end of thehub 24 a. Thehub 24 a may have a diameter which uniformly increases from the center portion to the outer circumferential end thereof. Thehub 24 a may be formed to have a diameter that uniformly increases from a portion of thehub 24 a, connected to eachleading edge 24 b-1 of the plurality ofblades 24 b, to the outer circumferential end of thehub 24 a. - The
shroud 24 c may have a bowl shape, and may have thecircular inlet hole 24 c-1 formed at the central portion thereof to receive air. Theinlet hole 24 c-1 of theshroud 24 c may be disposed to correspond to theinlet 142 of thefilter housing 140. That is, theinlet 142 of thefilter housing 140 may be formed at a portion corresponding to theinlet hole 24 c-1 of theshroud 24 c. The diameter of theinlet hole 24 c-1 may be larger than the diameter of theinlet 142 of thefilter housing 140. Theshroud 24 c may include anintake guide 24 c-2 that is formed at the circumferential portion of theinlet hole 24 c-1 and vertically protrudes downward. - The
shroud 24 c may be disposed under thehub 24 a, and may be spaced from thehub 24 a. The plurality ofblades 24 b may be coupled to the top surface of theshroud 24 c. - The
shroud 24 c may have an outer circumferential end thereof formed to incline in a direction opposite to the direction of theinlet hole 24 c-1. The outer circumferential end of theshroud 24 c may mean the circumference of the upper end of theshroud 24 c. The direction to which the outer circumferential end of theshroud 24 c directs may form about 45 degrees with a horizontal direction. The outer circumferential end of theshroud 24 c may be obliquely formed in an upward direction such that air is obliquely discharged upward. The direction to which the outer circumferential end of theshroud 24 c directs may be substantially parallel to the direction to which the outer circumferential end of thehub 24 a directs. - The longitudinal section of the
shroud 24 c may be formed into a form of straight line C which is oblique from the upper end of theintake guide 24 c-2 to the outer circumferential end of theshroud 24 c in a direction opposite to the direction of theinlet hole 24 c-1. The longitudinal section of theshroud 24 c may be formed into a straight line C which is oblique from a portion of theshroud 24 c, connected to eachleading edge 24 b-1 of the plurality ofblades 24 b, to the outer circumferential end of theshroud 24 c. Theshroud 24 c may have a diameter which uniformly increases from the upper end of theintake guide 24 c-2 to the outer circumferential end thereof. - The
shroud 24 c may be formed to have a diameter that uniformly increases from a portion of theshroud 24 c, connected to eachleading edge 24 b-1 of the plurality ofblades 24 b, to the outer circumferential end of theshroud 24 c. - The oblique straight line C of the longitudinal section of the
shroud 24 c and the oblique straight line A of the longitudinal section of thehub 24 a may be substantially parallel to each other. According to embodiment, an interval between theshroud 24 c and thehub 24 a may gradually increases to the outer circumferential end thereof. - The diameter of the outer circumferential end of the
shroud 24 c may be larger than the diameter of the outer circumferential end of thehub 24 a. The outer circumferential end of theshroud 24 c may further protrude in a radial direction than the outer circumferential end of thehub 24 a. The outer circumferential end of thehub 24 a may further protrude in a radial direction than a point P where a line S forming the shortest distance from the outer circumferential end of theshroud 24 c to thehub 24 a meets thehub 24 a. -
FIG. 10 is a cross-sectional view illustrating a filter housing of an air conditioner according to an embodiment of the present invention.FIG. 11 is a plan view illustrating the filter housing shown inFIG. 10 .FIG. 12 is a partial cross-sectional view illustrating an air conditioner according to an exemplary embodiment of the present invention. - The
filter mounting part 148 may form a lower portion of thefilter housing 140, and may receive thefilter assembly 10. The base 112 may be coupled to a lower side of thefilter mounting part 148. Acircular inlet 142 into which air flows may be formed in the upper surface of thefilter mounting part 148. - The
filter housing 140 may include aninflow guide 144 having a rim shape and upwardly protruding from a circumferential portion of theinlet hole 24 c-1. Theinflow guide 144 may protrude to the inside of theintake guide 24 c-2 of theshroud 24 c. The diameter of theinflow guide 144 may be formed to be smaller than the diameter of theintake guide 24 c-2 such that the upper end of theinflow guide 144 is inserted into theintake guide 24 c-2. Theinflow guide 144 may be disposed concentrically with theintake guide 24 c-2. - The
flow guide 146 may form an upper portion of thefilter housing 140, and may accommodate a lower portion of theblower fan 24. Theflow guide 146 may include a least a portion of an inner surface thereof corresponding to theshroud 24 c, which is obliquely formed. Theflow guide 146 may prevent air discharged out of theblower fan 24 from flowing into a lower side of theshroud 24 c. Theflow guide 146 may have a gradually increasing inner diameter toward an outer circumferential end thereof. The outer circumferential end of theflow guide 146 may mean the circumference of the upper end of theflow guide 146. - The distance between the inner surface of the
flow guide 146 and theshroud 24 c may gradually become closer toward the outer circumferential end thereof. - The outer circumferential end of the
flow guide 146 may be formed higher than the outer circumferential end of theshroud 24 c. However, the outer circumferential end of theflow guide 146 may be formed lower than the line C straightly extending from the outer circumferential end of theshroud 24 c. Theflow guide 146 may be formed such that the line C straightly extending from the outer circumferential end of theshroud 24 c does not meet theflow guide 146. That is, theflow guide 146 may be formed such that air guide by theshroud 24 c does not directly meet theflow guide 146. The line C straightly extending from the outer circumferential end of theshroud 24 c may direct to the airblowing flow passage 158, and may meet the inner surface of theblower body 152 of theblower housing 150. - The
blower housing 150 may be formed such that the line A straightly extending from the outer circumferential end of thehub 24 a may direct to the airblowing flow passage 158 and meets thevane 156. Themotor cover 154 of theblower housing 150 may be formed so as not to meet the line A straightly extending from the outer circumferential end of thehub 24 a. At least a portion of the outer surface of themotor cover 154 of theblower housing 150 may be formed obliquely along thehub 24 a. At least a portion of the outer surface of themotor cover 154 may be formed closely to thehub 24 a to prevent air discharged out of theblower fan 24 from flowing into an upper central portion of thehub 24 a. -
FIG. 13 is a perspective cross-sectional view illustrating a blower housing of an air conditioner according to an embodiment of the present invention.FIG. 14 is a plan view illustrating the blower housing shown inFIG. 13 .FIG. 15 is a bottom view illustrating the blower housing shown inFIG. 13 .FIG. 16 is a perspective view illustrating a vane of the blower housing shown inFIG. 13 .FIG. 17 is a view illustrating an operation of the vane shown inFIG. 16 . - The
blower body 152 may have a cylindrical shape, and a plurality ofvanes 156 may be coupled to an inner circumferential surface of theblower body 152. Theblower body 152 may form the ring-shape airblowing flow passage 158 together with themotor cover 154. Theflow guide 146 may be coupled to the lower side of theblower body 152. The circumference of the lower end of theblower body 152 may be larger than the outer circumferential end of theflow guide 146 such that the lower end of theblower body 152 covers and is coupled to the upper end of theflow guide 146. Thesupport body 120 may be coupled to an upper side of theblower body 152. - The
motor cover 154 may have a bowl shape, and theblower motor 22 may be inserted into and coupled to themotor cover 154. The plurality ofvanes 156 may be coupled to the outer circumferential surface of themotor cover 154. Theblower motor 22 may be disposed inside themotor cover 154, and an upper portion of theblower fan 24 may be disposed outside themotor cover 154. Themotor cover 154 may be disposed at a central portion of theblower body 152 while being spaced from themotor cover 154, and may form the ring-shaped airblowing flow passage 158 together with theblower body 152. - The plurality of
vanes 156 may be disposed on the airblowing flow passage 158 while being spaced. The plurality ofvanes 156 may connect themotor cover 154 and theblower body 152, and may support themotor cover 154 and theblower body 152 such that themotor cover 154 is spaced from theblower body 152. - The plurality of
vanes 156 may upwardly guide air discharged from theblower fan 24 to the airblowing flow passage 158. Each of the plurality ofvanes 156 may be formed into a bent plate shape which is uprightly disposed almost in a vertical direction. Each of the plurality ofvanes 156 may include a plurality ofribs 156 e formed on one surface thereof in an air flow direction. - The surface of the
vane 156 to which air flows may be referred to as apositive pressure surface 156 c, and the opposite surface to thepositive pressure surface 156 c may be referred to as anegative pressure surface 156 d. In this embodiment, the surface on which the plurality ofribs 156 e are not formed may be a positive pressure surface, and the surface on which the plurality ofribs 156 e are formed may be a negative pressure surface. In regard to thevane 156, the lower end that is an upstream side of the air flow direction may be referred to as afront end 156 a, and the upper end that is a downstream side of the air flow direction may be referred to as arear end 156 b. - Air discharged from the
blower fan 24 may be obliquely discharged upward to the airblowing flow passage 158 in a circumferential direction, and may rotate in a rotation direction of theblower fan 24 when entering the airblowing flow passage 158. In this embodiment, air discharged from theblower fan 24 may rotate clockwise when viewed from top, and may flow upward. - In each of the plurality of
vanes 156, thepositive pressure surface 156 c may be concavely formed, and thenegative pressure surface 156 d may be convexly formed. In each of the plurality ofvanes 156, therear end 156 b that is a surface coupled to theblower body 152 may be formed to direct to the upper side, and toward the front end 165, thevane 156 may be bent in a direction (direction of thepositive pressure surface 156 c on which the ribs are not formed) from which air flows. In each of the plurality ofvanes 156, thefront end 156 may direct to the rotation direction of theblower fan 24 in a radial direction, and therear end 156 b may direct to the rotation direction of theblower fan 24 in a radial direction. Each of the plurality ofvanes 156 may guide air spirally swirling due to the above-mentioned shape, so as to allow air to flow in a vertical direction. - The plurality of
ribs 156 e may protrude from thenegative pressure surface 156 d of thevane 156, and the longitudinal direction of therib 156 e may be formed to become the air flow direction. Each of the plurality ofribs 156 e may be formed in a form of airfoil in which the height of the section thereof gradually decreases from the front end to the rear end. Each of the plurality ofribs 156 e may be convexly formed in a bent direction of thenegative pressure surface 156 d of thevane 156. The plurality ofribs 156 e may be formed on thenegative pressure surface 156 d of thevane 156 to prevent a swirl from occurring on thenegative pressure surface 156 d of thevane 156 and allow air to flow in an upward direction. - Each of the plurality of
vanes 156 may be formed such that thefront end 156 a is curvedly bent from thepositive pressure surface 156 c to thenegative pressure surface 156 d. Thefront end 156 a of each of the plurality ofvanes 156 may be curvedly bent in a height direction of the plurality ofribs 156 e, and thus may allow air introduced in a direction of thepositive pressure surface 156 to flow upward along thepositive pressure surface 156 c. Also, the front ends 156 a of the plurality ofvanes 156 may guide air, flowing to thenegative pressure surface 156 d, toward the plurality ofvanes 156. - In each of the plurality of
vanes 156, therear end 156 b may have a saw-toothed shape. Therear end 156 b of thevane 156 may be formed into a saw-toothed shape, and thus a time difference may occur on air coming away from therear end 156 b, thereby inhibiting occurrence of noise. - Hereinafter, the operation of the air conditioner configured as above will be described as follows.
- When a torque is generated by the
blower motor 22, theblower fan 24 connected to theshaft 22 a of theblower motor 22 may rotate. When theblower fan 24 rotates and thus air blows, external air may flow into theintake flow passage 101 of thebase 112. Air introduced through theintake flow passage 101 may be purified while passing thefilter assembly 10, and then may be entered into theinlet hole 24 c-1 of theshroud 24 c of theblower fan 24 through theinlet 142 of thefilter housing 140. Air entered to theblower fan 24 may be obliquely discharged in an upward direction by theshroud 24 c and thehub 24 a. Air discharged out of theblower fan 24 may pass the airblowing flow passage 158 of theair blowing unit 20, and may flow in an upward direction by the plurality ofvanes 156. Air passing through the airblowing flow passage 158 may be guided to thehumidification module 200 placed on thesupport body 120. Air flowing into thehumidification module 200 may be humidified while passing through thehumidification medium 50, and then may be upwardly discharged through thetop cover assembly 230. -
FIG. 18 is a front view illustrating a blower fan of an air conditioner according to another embodiment of the present invention. - A
blower fan 24′ according to another embodiment of the present invention may include ahub 24′a having a center thereof coupled with the shaft, ashroud 24′c spaced from thehub 24′a and including an inlet hole formed at a central portion thereof to receive air, and a plurality ofblades 24 b disposed between thehub 24′a and theshroud 24′c. - Since the
hub 24′a and theshroud 24′c of theblower fan 24′ according to another embodiment of the present invention are identical to thehub 24 a and theshroud 24 c according to an embodiment of the present invention, a detailed description thereof will be omitted herein. - In each of
blades 24′b according to another embodiment of the present invention, a trailingedge 24′b-2 of theblade 24′b may include at least one curve. A portion of each trailingedge 24′b-2 of the plurality ofblades 24′b may further protrude in a radial direction than a virtual line L connecting between a point connected to theshroud 24′c and a point connected to thehub 24′a. The radially protruding portion of the trailingedge 24′b-2 may be formed into a curve. A portion of the trailingedge 24′b-2 close to the point connected to theshroud 24′c may be formed into a curve, and a portion of the trailingedge 24′b-2 close to the point connected to thehub 24′a may be formed into a straight-line. - The portion of the trailing
edge 24′b-2 close to the point connected to theshroud 24′c may be formed in a curve, and may be convexly formed so as to protrude in a radial direction. Thus, occurrence of a whirl due to a flow interference of theshroud 24′c and the trailingedge 24′b-2 can be inhibited. - The
portion 24′a-2 a of the trailingedge 24′b-2 formed into a curve may be greater than theportion 24′a-2 b formed into a straight-line. When theportion 24′a-2 a formed into a curve is greater, occurrence of a swirl may be further inhibited. However, when the area of theblade 24 b is excessively widened, the power consumption of theblower motor 22 may increase. Accordingly, it may be desirable that theportion 24′a-2 a formed into a curve ranges from about 75% to about 85% of the trailingedge 24′b-2. - The blower fans, the flow guides, and the vanes according to embodiments may be applied to various air conditioners that perform purification, humidification, cooling, and heating by blowing air.
- An air conditioner according to an exemplary embodiment of the present invention has at least one of the following effects.
- First, a plurality of vanes disposed at a blower fan slipstream can guide air discharged from a blower fan in a spiral form in a vertical direction, and thus can maximize the air volume while reducing a flow loss, noise and vibration.
- Second, a time difference occurs on air slipping away from the vane by forming sawteeth at the rear end of the vane, and thus occurrence of noise can be inhibited.
- Third, occurrence of swirl can be inhibited by forming a rib on the negative pressure surface of the vane, and air is guided so as to flow upward. Thus, the flow loss and occurrence of noise and vibration can be inhibited.
- Fourth, air purified at a lower side can be allowed to flow upward and then humidified, and thus cleaning and humidification of air can be smoothly performed.
- The effects of the present invention are not limited to the above; other effects that are not described herein will be clearly understood by the persons skilled in the art from the following claims.
- While this invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. The preferred embodiments should be considered in descriptive sense only and not for purposes of limitation. Therefore, the scope of the invention is defined not by the detailed description of the invention but by the appended claims, and all differences within the scope will be construed as being included in the present invention.
Claims (20)
Priority Applications (1)
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US15/338,153 US10330104B2 (en) | 2015-10-30 | 2016-10-28 | Air conditioner |
Applications Claiming Priority (6)
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US201562248463P | 2015-10-30 | 2015-10-30 | |
KR20150156254 | 2015-11-07 | ||
KR10-2015-0156254 | 2015-11-07 | ||
KR10-2015-0186044 | 2015-12-24 | ||
KR1020150186044A KR101931707B1 (en) | 2015-10-30 | 2015-12-24 | Air conditioner |
US15/338,153 US10330104B2 (en) | 2015-10-30 | 2016-10-28 | Air conditioner |
Publications (2)
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US20170122329A1 true US20170122329A1 (en) | 2017-05-04 |
US10330104B2 US10330104B2 (en) | 2019-06-25 |
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US15/338,153 Active 2037-07-26 US10330104B2 (en) | 2015-10-30 | 2016-10-28 | Air conditioner |
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US (1) | US10330104B2 (en) |
EP (1) | EP3163178B1 (en) |
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Also Published As
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US10330104B2 (en) | 2019-06-25 |
EP3163178A1 (en) | 2017-05-03 |
EP3163178B1 (en) | 2020-10-07 |
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